Re: best image enlargement process/ algorithm?

Jayson
These folks (below) have an algorithm wrapped up in Photozoom Pro 2 that
produces some good (IMHO) results if you are looking to improve the
*apparent* quality of your images for, for example, printing.

Like all the other enlargement algorithms methods though, it can't show
what was never there in the first place so |I don't think it will help if
you are doing any image analysis.

HTH

Iain


www.benvista.com

"Odysseus" <odysseus1479-at@xxxxxxxxxxxxx> wrote in message
news:odysseus1479-at-833F78.14425907042007@xxxxxxxxxxxxxxxxx
In article <otORh.570$3P3.161@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>,
"Jayson Butterworth" <jayson@xxxxxxxxxxxx> wrote:

Just wondering what is now considered the best image enlargement
algorithm
these days. I've been using bicubic for years, but surely something
better
has come along. I have lunar and planetary images I'd like to enlarge
and
the normal bucubic doesn't do a whole lot.

Since version 8 (AKA "CS"), Adobe Photoshop has had a "bicubic smoother"
option in the Image Size dialog. I don't know the details of the
algorithm, but it seems to perform as advertised. Another technique that
tends to produce smoother-looking results is to upsample in steps that
increase the file size to no more than double at a time, _i.e._ of about
141%. Ultimately, though, there will never be an entirely satisfactory
substitute for high-resolution data ...

Caveat: I have no experience in processing astronomical images; my
Photoshop background is in the prepress trade, with 'ordinary' photos
and graphics.

--
Odysseus


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